Getting a formula: You pay $56 to rent a hotel room, but if you rent more than one room, you get a discount of $2 per room for each additional room rented. a. If you rent 3 rooms, how much will each...

Getting a formula: You pay $56 to rent a hotel room, but if you rent more than one room, you get a discount of $2 per room for each additional room rented.

a. If you rent 3 rooms, how much will each one cost?

b. If you rent 3 rooms, how much will you pay for all three combined?

c. Say you rent n rooms. Find a formula showing how much each one costs as a function of n.

d. Say you rent n rooms. Find a formula showing how much you will pay for all n rooms combined as a function of n.